Family name Тонга (Tonga 
, Тонга 
) , around the world, is a common surname. The last name Тонга is characteristic of Cameroon, where it is quite a common surname, Zambia, where it is quite a rare surname, and Fiji. Not in comparison with a country's population, it most frequently occurs in Cameroon, Philippines, and Turkey. Very seldom, Тонга is the forename as well as the last name.